The AUDI A6 (2004-09) 4DR SALOON 3.0 TDI QUATTRO S LINE is a luxury sedan that sits in the upper-middle range of the UK market, known for offering a blend of performance, comfort, and style. It is equipped with a powerful 3.0 TDI diesel engine and features Quattro all-wheel drive, making it a strong choice for drivers seeking both a comfortable ride and capable handling. The model is popular among those needing a reliable, spacious vehicle for daily use, family journeys, or longer trips, thanks to its generous interior and classy design. Data from mycarcheck.com reveals a moderate sample size of 39 lookups across 21 distinct VINs, indicating consistent interest in this model since 2021. The average recorded mileage is around 167,000 miles, with most cars seen having roughly four previous owners and a typical annual mileage of about 9,000 miles. Its average private sale value roughly sits at £1,200, reflecting its age and market positioning. What makes the AUDI A6 (2004-09) 4DR SALOON 3.0 TDI QUATTRO S LINE standout is its reputation for a refined driving experience and a reputation for durability. It’s often considered a step above basic saloons thanks to its sporty S line features and sophisticated diesel engine. In comparison to rivals, it is praised for its combination of comfort, performance, and versatile use, making it an appealing option for those looking for a premium, reliable used vehicle in the UK market.